The Hyundai G6DT is a 2,199 cc, V6 turbo‑diesel engine produced between 2011 and 2018. It features dual overhead camshafts (DOHC), 24 valves, and a variable geometry turbocharger (VGT) paired with common — rail direct injection. In standard form it delivered 147–154 kW (200–210 PS) and torque figures between 436–450 Nm, providing strong low — end pull and refined highway cruising.
Fitted to models such as the Grandeur (HG), Genesis (DH), and Santa Fe (DM), the G6DT was engi…
All production years 2011–2018 meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/8901).
The Hyundai G6DT is a 2,199 cc V6 turbo-diesel engine engineered for executive sedans and SUVs (2011–2018). It combines DOHC architecture with common-rail direct injection and a variable geometry turbocharger to deliver strong low-end torque and smooth operation. Designed to meet Euro 5 emissions standards, it balances performance with regulatory compliance through EGR, DPF, and SCR systems.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,199 cc | |
Fuel type | Diesel (Ultra-low sulfur, EN 590) | |
Configuration | V6, DOHC, 24‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 84.0 mm × 99.0 mm | |
Power output | 147–154 kW (200–210 PS) | |
Torque | 436–450 Nm @ 1,750–2,750 rpm | |
Fuel system | Bosch CP4.2 common-rail (up to 2,000 bar) | |
Emissions standard | Euro 5 | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable-geometry turbo (VGT) | |
Timing system | Chain-driven DOHC | |
Oil type | Hyundai SP 5W‑30 (API CJ-4/ACEA C3) | |
Dry weight | 210 kg |
The Hyundai G6DT was used across Hyundai's HG/DH/DM platforms with longitudinal mounting and no hybrid variants. This engine received platform-specific adaptations—reinforced mounts in the Santa Fe, acoustic shielding in the Grandeur, and revised AdBlue tank routing in the Genesis—and from 2015 the fuel pump drive revision improved reliability, creating service part distinctions. All adaptations are documented in OEM technical bulletins.
The G6DT's primary reliability risk is high-pressure fuel pump drive gear wear in pre-2015 builds, with elevated incidence in high-mileage or towing applications. Hyundai internal service data from 2014 indicated a measurable subset of early engines exhibiting fuel pressure faults after 120,000 km, while UK DVSA records show no significant emissions-related MOT failures tied to this engine. Extended oil change intervals and use of non-specified oil amplify pump wear, making maintenance adherence critical.
Analysis derived from Hyundai technical bulletins (2013–2017) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The G6DT is generally robust for executive and SUV applications, but early models (2011–2014) had high-pressure fuel pump reliability concerns. Post-2015 revisions resolved this. Regular oil changes with correct 5W‑30 SP spec oil and adherence to AdBlue quality standards are essential for longevity, especially under towing or highway use.
Top issues include high-pressure fuel pump drive wear (pre-2015), DPF regeneration faults, AdBlue system crystallization, and timing chain tensioner wear. These are documented in Hyundai TSBs and addressed with updated service parts. Most problems are preventable with proper maintenance and correct fluids.
The G6DT powered the Grandeur (HG, 2011–2016), Genesis (DH, 2012–2016), and Santa Fe (DM, 2012–2018). All are non-hybrid, Euro 5 compliant, and use longitudinal mounting with V6 DOHC, common-rail injection, and SCR/AdBlue emissions control.
Moderate tuning potential. ECU remaps typically yield +20–30 kW safely, as stock internals handle increased torque. However, aggressive tuning without supporting fuel system upgrades risks premature pump or injector failure. Always maintain DPF/SCR compliance in regulated markets.
In a Santa Fe 2.2 CRDi 4WD, expect ~8.5 L/100km city and ~6.2 L/100km highway (~38 mpg UK combined). Real-world figures vary with load and driving style, but the engine is optimized for torque and highway efficiency rather than urban economy.
Yes. The G6DT is an interference engine. If the timing chain fails or jumps, piston-to-valve contact can cause catastrophic damage. Regular inspection of the chain tensioner and using correct oil viscosity are critical to prevent failure.
Hyundai specifies SP 5W‑30 synthetic oil meeting API CJ-4/ACEA C3 or newer. Always use low-SAPS oil to protect DPF and SCR components. Change every 10,000 km or 12 months, especially under heavy load or towing.
Comprehensive technical documentation and regulatory references
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HYUNDAI Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
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